It's really up to you. If possible see if you can shoot an 11 and decide then if it is worth the switch. With the markers in my sig...I can honestly say I use my 11 90% of the time...my kid uses the sl94 and the sls is the back up for either of us.

Same package longer setup. You have more options for tuning how your marker shoots with the Ego11. If your the type that likes to mess with perfection. I prefer my 08 over a lot of new markers on the market. But the 11 is a great marker. You can't go wrong with either.